PG
22
PG
22
Staging for Heat Pump with 2 stages of compression (no auxiliary)
Target Temperature Maintenance -
If the room temperature is within the target temperature minus the “2nd stg on at”
setting, the 1st stage heat pump will turn on. If the target temperature is not reached within 15 minutes, the 2nd stage of
heat pump will turn on with the 1st stage to target.
Target Temperature Recovery -
If the room temperature is beyond the new target temperature minus the “2nd stg on
at” setting, the 1st stage of heat pump will turn on. Ten seconds later, the 2nd stage of heat pump will turn on with the 1st
stage.
There are two options for recovery: FAST and ECON. With FAST recovery, both heat pump stages stay on to the target.
With ECON recovery, both heat pump stages stay on until the “2nd stg on at” setting is reached. Then, the 2nd stage heat
pum shuts off and the 1st stage pump stays on to target.
Staging for 1 or 2 stages of Heat Pump, and up to 3 stages of aux heat
Target Temperature Maintenance -
If the room temperature is within the target temperature minus the “aux on at”
setting, the auxiliary heat will not be used, just the heat pump (1 or 2 stages) as explained above in “target temperature
maintenance”.
Target Temperature Recovery -
If the room temperature is beyond the new target minus the “aux on at” setting, the 1st
stage of heat pump will turn on, ten seconds later the 2nd stage of heat pump will turn on, ten seconds later the 1st stage
of auxiliary heat will turn on. If the new target temperature is then not reached after 15 minutes, the 2nd stage of auxiliary
heat will turn on. If the new target temperature is not reached 15 minutes after that, the 3rd stage of auxiliary heat will turn
on.
There are two options for recovery: FAST and ECON. With FAST recovery all stages will stay on until the new target
temperature is reached. With ECON recovery all stages will stay on until the “aux on at” setting is reached. Then all
auxiliary heat goes off and only the heat pump is on to the target.
ELECTRIC vs. GAS or OIL auxiliary heat -
With electric auxiliary heat, the heat pump stays on while the auxiliary heat
is on. With gas or oil auxiliary heat, the heat pump will shut off while the auxiliary heat is on.
This is required by heat pump design.
